National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Mid Valley Airport (KTXW)

Lat: 26.18°NLon: 97.97°WElev: 70ft.

Partly Cloudy

84°F

29°C

Humidity 72%
Wind Speed SE 8 mph
Barometer 29.98 in
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 7 Oct 9:35 am CDT
Extended Forecast for

Mercedes TX

  • Today

    Today: A 50 percent chance of showers and thunderstorms, mainly after noon. Increasing clouds, with a high near 94. East wind 6 to 10 mph.

    High: 94 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tonight

    Tonight: A slight chance of thunderstorms before 1am, then a slight chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 75. East wind 5 to 10 mph becoming light and variable. Chance of precipitation is 30%.

    Low: 75 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms, mainly after 7am. Mostly sunny, with a high near 92. Northeast wind 6 to 14 mph, with gusts as high as 23 mph.

    High: 92 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of thunderstorms before 7pm, then a slight chance of showers after 1am. Partly cloudy, with a low around 74. East northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 74 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday

    Thursday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 91. Northeast wind 9 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

    High: 91 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 4am, then a slight chance of showers and thunderstorms after 4am. Mostly clear, with a low around 74. Northeast wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 74 °F

    Slight Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91. Northeast wind 8 to 13 mph, with gusts as high as 22 mph.

    High: 91 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 68. East northeast wind 5 to 10 mph becoming light.

    Low: 68 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 92. North wind 6 to 9 mph becoming east in the afternoon.

    High: 92 °F

    Sunny

Detailed Forecast

Today
A 50 percent chance of showers and thunderstorms, mainly after noon. Increasing clouds, with a high near 94. East wind 6 to 10 mph.
Tonight
A slight chance of thunderstorms before 1am, then a slight chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 75. East wind 5 to 10 mph becoming light and variable. Chance of precipitation is 30%.
Wednesday
A 50 percent chance of showers and thunderstorms, mainly after 7am. Mostly sunny, with a high near 92. Northeast wind 6 to 14 mph, with gusts as high as 23 mph.
Wednesday Night
A slight chance of thunderstorms before 7pm, then a slight chance of showers after 1am. Partly cloudy, with a low around 74. East northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Thursday
A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 91. Northeast wind 9 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Thursday Night
A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 4am, then a slight chance of showers and thunderstorms after 4am. Mostly clear, with a low around 74. Northeast wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91. Northeast wind 8 to 13 mph, with gusts as high as 22 mph.
Friday Night
Mostly clear, with a low around 68. East northeast wind 5 to 10 mph becoming light.
Saturday
Sunny, with a high near 92. North wind 6 to 9 mph becoming east in the afternoon.
Saturday Night
Mostly clear, with a low around 69. East wind 5 to 10 mph becoming light east southeast after midnight.
Sunday
Sunny, with a high near 91. Light east southeast wind increasing to 5 to 10 mph in the morning.
Sunday Night
Mostly clear, with a low around 72.
Columbus Day
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
Mercedes TX
 26.16°N 97.93°W
Last Update:
9:30 am CDT Oct 7, 2025
Forecast Valid:
9am CDT Oct 7, 2025-6pm CDT Oct 13, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation